Commercial trucking can put enormous demands on wheel end components. Built to withstand the harshest conditions, the STEMCO® Defender™ hub cap is made from an ultra-durable, corrosion-free, composite material and is available with a permanently bonded, leak-proof window.
Has Prerequisite
![A man applying grit guard to a wheel end](https://www.stemco.com/wp-content/uploads/2020/07/tqm-grit-guard-thumb-300x168.jpg)
![A man applying grit guard to a wheel end](https://www.stemco.com/wp-content/uploads/2020/07/tqm-grit-guard-thumb-300x168.jpg)
TQM Wheel End Part 2 – Grit Guard® Installation
Requires TQM Wheel End Training Part 1